WO2016054776A1 - Procédés et systèmes de mise en œuvre d'un canal de commande auto-géré - Google Patents

Procédés et systèmes de mise en œuvre d'un canal de commande auto-géré Download PDF

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Publication number
WO2016054776A1
WO2016054776A1 PCT/CN2014/088155 CN2014088155W WO2016054776A1 WO 2016054776 A1 WO2016054776 A1 WO 2016054776A1 CN 2014088155 W CN2014088155 W CN 2014088155W WO 2016054776 A1 WO2016054776 A1 WO 2016054776A1
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WO
WIPO (PCT)
Prior art keywords
channel
voice
session
talkgroup
receiver
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PCT/CN2014/088155
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English (en)
Inventor
Kangkai ZHAO
Hongxia Wang
Li Wang
Yu Zhou
Original Assignee
Motorola Solutions, Inc.
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Publication date
Application filed by Motorola Solutions, Inc. filed Critical Motorola Solutions, Inc.
Priority to US15/507,257 priority Critical patent/US9913110B2/en
Priority to PCT/CN2014/088155 priority patent/WO2016054776A1/fr
Publication of WO2016054776A1 publication Critical patent/WO2016054776A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/08—Trunked mobile radio systems

Definitions

  • Some mobile radios communicate via cellular radio networks, some communicate via ad-hoc device-to-device connections (as part of, e. g. , an ad-hoc network of such connections) ; such communication is referred to interchangeably in this disclosure at various times using adjectives such as direct, direct-mode, localized, point-to-point, peer-to-peer, and the like.
  • Some mobile radios are equipped, programmed, and configured to be able to communicate via both cellular networks and ad-hoc arrangements, perhaps in addition to being able to communicate according to one or more other configurations.
  • Mobile radios may be incorporated into or with one or more other devices such as cell phones, smartphones, tablets, notebook computers, laptop computers, and the like.
  • some mobile radios are referred to at times using terms such as handheld, handheld transceiver, walkie-talkie, two-way radio, and the like.
  • some devices include the functionality of both a smartphone and a mobile radio. And certainly many other examples could be listed, as known to those having skill in the relevant art.
  • Public-safety personnel utilize mobile radios in talkgroups so that multiple responders can simultaneously hear what one person is saying, and so that talkgroup members can respond in an easy and effective fashion. This is far more efficient than a responder serially sending out the same message to a plurality of allies. It is desirable for a public-safety responder to be able to communicate with as many allies as possible as efficiently as possible for at least the reason that the immediacy and efficacy with which public-safety responders can communicate with one another are quite often determinative with respect to how positive the ultimate outcome of a given incident can be. Accordingly, there is a need for methods and systems for implementing a self-managed control channel.
  • FIG. 1 depicts an example process, in accordance with an embodiment.
  • FIG. 2 depicts an example mobile radio, in accordance with an embodiment.
  • FIG. 3 depicts a first example scenario involving a plurality of mobile radios, in accordance with an embodiment.
  • FIG. 4 depicts a second example scenario involving the mobile radios of FIG. 3, in accordance with an embodiment.
  • FIG. 5 depicts a third example scenario involving the mobile radios of FIG. 3, in accordance with an embodiment.
  • FIG. 6 depicts an example communication system, in accordance with an embodiment.
  • FIG. 7 depicts a further example of the communication system of FIG. 6, in accordance with an embodiment.
  • One embodiment takes the form of a process that is carried out by a mobile radio that is a member of a talkgroup, the mobile radio having first and second receivers and a preconfigured channel list that includes a control channel and multiple voice channels.
  • the process includes maintaining voice-channel-status data reflecting which of the voice channels in the preconfigured channel list are currently busy or idle, monitoring the control channel at least in part by residing the first receiver on the control channel, and detecting a session-start event.
  • the mobile radio If the session-start event includes receipt, via a user interface, of a session-start command, the mobile radio carries out a set of one or more session-initiation functions, including selecting an idle one of the voice channels, and transmitting, via the control channel, a session-start notification that identifies the talkgroup and specifies the selected voice channel. If the session-start event includes receipt, via the control channel, of a session-start notification that identifies the talkgroup and specifies one of the voice channels in the preconfigured channel list, the mobile radio carries out a set of one or more session-joining functions, including determining whether the second receiver is currently tuned to the specified voice channel and, if not, then responsively tuning the second receiver to the specified voice channel.
  • the mobile radio includes first and second receivers, a preconfigured channel list that includes a control channel and multiple voice channels, a processor, and data storage containing instructions executable by the processor for causing the mobile radio to carry out at least the functions described in the preceding paragraph.
  • any of the variations and permutations described in the ensuing paragraphs and anywhere else in this disclosure can be implemented with respect to any embodiments, including with respect to any method embodiments and with respect to any system embodiments. Furthermore, this flexibility and cross-applicability of embodiments is present in spite of the use of slightly different language (e. g. , process, method, steps, functions, set of functions, and the like) to describe and or characterize such embodiments.
  • the second receiver resides on an idle one of the voice channels when not participating in a talkgroup session.
  • the second receiver is powered down when not participating in a talkgroup session.
  • the set of session-initiation functions further includes updating the voice-channel-status data to indicate that the specified voice channel is busy.
  • the set of session-joining functions further includes updating the voice-channel-status data to indicate that the specified voice channel is busy.
  • the mobile radio carries out a set of one or more session-avoiding functions, including updating the voice-channel-stats data to indicate that the specified voice channel is busy, and determining whether the second receiver is currently tuned to the specified voice channel and, if so, then responsively configuring the second receiver to not be tuned to the specified voice channel.
  • configuring the second receiver to not be tuned to the specified voice channel includes tuning the second receiver to an idle one of the voice channels.
  • configuring the second receiver to not be tuned to the specified voice channel comprises powering down the second receiver.
  • the mobile radio detects, via the second receiver, that a voice channel to which the second receiver is currently tuned is in use by a different talkgroup and responsively mutes that voice channel and updates the voice-channel-status data to indicate that the voice channel is busy.
  • the mobile radio selects an idle one of the voice channels and carries out a channel-testing process.
  • the channel-testing process includes preselecting an idle one of the voice channels, transmitting on the preselected voice channel for a randomly selected amount of time, and thereafter checking the preselected voice channel for transmissions from another mobile radio. If no other such transmissions are detected on the preselected voice channel, the mobile radio designates the preselected voice channel as being the selected voice channel. If such transmissions are detected on the preselected voice channel, the mobile radio updates the voice-channel-status data to indicate that the preselected voice channel is busy, and repeats the channel-testing process.
  • the mobile radio periodically conveys the voice-channel-status data via the control channel.
  • maintaining the voice-channel-status data includes receiving broadcast voice-channel-status data and responsively accordingly updating the maintained voice-channel-status data.
  • the mobile radio scans one or more of the voice channels, and if the mobile radio detects a session-start event for an ongoing session for the talkgroup on a particular one of the voice channels, then the mobile radio plays out audio received on the particular voice channel and updates the voice-channel-status data to indicate that the particular voice channel is busy.
  • detecting an ongoing session for the talkgroup includes detecting an identifier of the talkgroup.
  • detecting an ongoing session for the talkgroup includes detecting an identifier of another mobile radio that is also a member of the talkgroup.
  • updating the voice-channel-status data is based at least in part on the scanning of one or more of the voice channels.
  • the mobile radio maintains a hang timer with respect to talkgroup transmissions on the specified voice channel, and upon detecting an expiration of the hang timer, responsively carries out a set of session-termination functions, including updating the voice-channel-status data to indicate that the specified voice channel is idle.
  • the set of session-termination functions further includes transmitting a session-termination message via the control channel.
  • the mobile radio receives a session-termination message via the control channel, and responsively updates the voice-channel-status data to indicate that the specified voice channel is idle.
  • FIG. 1 depicts an example process, in accordance with an embodiment.
  • FIG. 1 depicts a process 100 that in at least one embodiment is carried out by a mobile radio that is a member of a talkgroup that is referred to in this example description as the particular talkgroup.
  • the description of the process 100 as being carried out by a mobile radio is provided by way of example, as other suitably equipped and programmed devices could carry out the process 100.
  • a mobile radio maintains voice-channel-status data.
  • the mobile radio is equipped with a preconfigured channel list that includes a control channel and multiple voice channels.
  • the voice-channel-status data includes information on whether each respective voice channel is either busy or idle.
  • This voice-channel-status data could be stored in a variety of different ways.
  • the voice-channel-status data is stored in association with the stored channel list, such that each data record for each respective voice channel has a field that reflects whether that voice channel is currently busy or idle.
  • the voice-channel-status data is maintained entirely separately from the preconfigured channel list.
  • the voice-channel-status data takes the form of an idle-channel list: if a voice channel is on the idle-channel list, it’s idle, otherwise it’s busy. In other embodiments, the voice-channel-status data takes the form of a busy-channel list: if a voice channel is on the busy-channel list, it’s busy, otherwise it’s idle. And certainly numerous other example implementations could be listed here.
  • the mobile radio monitors the control channel at least in part by residing its first receiver on the control channel, which is one of the channels that is included in the mobile radio’s preconfigured channel list.
  • the mobile radio detects a session-start event.
  • the mobile radio if the detected session-start event is receipt via a user interface of a session-start command, then the mobile radio carries out a set of one or more session-initiation functions; two such functions are depicted in FIG. 1 at session-initiation steps 110 and 112.
  • the detected session-start event is receipt, via the control channel (that is being monitored with the first receiver) , of a session-start notification that identifies the particular talkgroup (i. e. , the mobile radio’s talkgroup) and specifies one of the voice channels, then the mobile radio carries out a set of one or more session-joining functions; one such function is depicted in FIG. 1 at session-joining step 114.
  • the mobile radio refers to its stored voice-channel-status data and selects a voice channel from the preconfigured channel list that is indicated by the voice-channel-status data as being idle.
  • the mobile radio transmits a session-start notification via the control channel.
  • the session-start notification contains data identifying the particular talkgroup (i. e. , the mobile radio’s talkgroup) and specifying the idle voice channel that the mobile radio selected at step 110.
  • the mobile radio checks whether its second receiver is currently tuned to the voice channel that was specified in the received session-start notification. If its second receiver is not already tuned to that specified voice channel, then the mobile radio responsively tunes its second receiver to that specified voice channel.
  • FIG. 1 the various steps 102-114 that are depicted in FIG. 1 are also further described below in connection with FIGs. 3-5, which depict various scenarios in which multiple different mobile radios are each independently embodying the present methods and systems, collectively achieving a self-managed control channel for the respective talkgroup to which they belong.
  • FIG. 2 depicts an example mobile radio, in accordance with an embodiment.
  • FIG. 2 depicts an example mobile radio 200 as including a communication interface 202, a preconfigured channel list 210, a processor 216, a data storage 218, and a user interface 224, all of which are communicatively coupled with one another via a system bus 226 (or other suitable communication connection, network, or the like) .
  • a system bus 226 or other suitable communication connection, network, or the like
  • the communication interface 202 includes a transmitter 204, a first receiver 206, and a second receiver 208.
  • the transmitter 204 can be configured to transmit on one of a set of channels.
  • Each of the first receiver 206 and the second receiver 208 can be configured (e. g. , tuned) to receive on one of a set of channels.
  • the communication interface 202 may be configured to be operable for communicating according to one or more wireless-communication protocols, some examples of which include RF, LTE, APCO P25, ETSI DMR, TETRA, WiFi, Bluetooth, and the like.
  • the communication interface 202 may also include one or more wired-communication interfaces (for communicating according to, e. g.
  • the communication interface 202 may include any necessary hardware (e. g. , chipsets, antennas, Ethernet cards, etc. ) , any necessary firmware, and any necessary software for conducting one or more forms of communication with one or more other entities as described herein.
  • the preconfigured channel list 210 contains a control channel 212 and multiple voice channels 214.
  • Each mobile radio 200 contains a preconfigured channel list 210 of available channels.
  • One of the channels of the preconfigured channel list 210 is configured as the control channel 212.
  • the remainder of the channels of the preconfigured channel list 210 are configured as the voice channels 214. While this embodiment describes the channels as multiple voice channels 214, this is by way of example and not limitation, as one with skill in the relevant art could use these channels to transmit other information including but not limited to audio, video, data, and the like.
  • the preconfigured channel list 210 may be stored in a data storage, such as data storage 218, or a separate computer readable memory, such as a flash memory, read-only memory, or code-plug.
  • the processor 216 may include one or more processors of any type deemed suitable by those of skill in the relevant art, some examples including a general-purpose microprocessor and a dedicated digital signal processor (DSP) .
  • DSP dedicated digital signal processor
  • the data storage 218 may take the form of any non-transitory computer-readable medium or combination of such media, some examples including flash memory, read-only memory (ROM) , and random-access memory (RAM) to name but a few, as any one or more types of non-transitory data-storage technology deemed suitable by those of skill in the relevant art could be used.
  • the data storage 218 contains program instructions 220 executable by the processor 216 for carrying out various functions described herein, and further is depicted as containing operational data 222, which may include any one or more data values stored by and/or accessed by the example mobile radio 200 in carrying out one or more of the functions described herein.
  • the user interface 224 may include one or more input devices (a. k. a. components and the like) and/or one or more output devices (a. k. a. components and the like) .
  • the user interface 224 may include one or more touchscreens, buttons, switches, microphones, and the like.
  • the user interface 224 may include one or more displays, speakers, light emitting diodes (LEDs) , and the like.
  • one or more components (e. g. , an interactive touchscreen and display) of the user interface 224 could provide both user-input and user-output functionality.
  • other user-interface components e. g. , a PTT button
  • FIG. 3 depicts a first example scenario involving a plurality of mobile radios, in accordance with an embodiment.
  • FIG. 3 depicts an example scenario 300 that includes six mobile radios 202a-c and 204a-c.
  • the mobile radios 202a-c are part of a first talkgroup that is referred to in this disclosure as talkgroup 202
  • the mobile radios 204a-c are part of a second, different, talkgroup that is referred to in this disclosure as talkgroup 204.
  • Each of the mobile radios 202a-c and 204a-c may have a structure similar to that described in connection with the example mobile radio 200 of FIG. 2, and each may be configured (e. g. , equipped and programmed) to independently carry out processes such as the example process 100 that is described in connection with FIG. 1. It is not necessary, however, that all six of the mobile radios be identically programmed.
  • one or more of the mobile radios 202a-c and 204a-c may be programmed to reside their respective second receiver on an idle voice channel when not participating in a talkgroup session, while one or more others of the mobile radios 202a-c and 204a-c may be programmed to power down their respective second receiver when not participating in a talkgroup session.
  • each of the mobile radios 202a-c and 204a-c are programmed to reside their respective second receiver on an idle one of the voice channels when not participating in a talkgroup session. Again, this is by way of example and not limitation.
  • all six of the mobile radios 202a-c and 204a-c are configured with the same preconfigured channel lists; i. e. , all six of those mobile radios consider the same particular channel to be the control channel, and all six of those mobile radios operate according to the same list of multiple voice channels.
  • various mobile radios are configured with preconfigured channel lists that vary amongst one another.
  • the first and second talkgroups 202 and 204 are PTT talkgroups, though certainly the talkgroups could be of other varieties.
  • each mobile radio 202a-c and 204a-c is depicted along with a transmit-channel indicator on its respective right side, two receive-channel indicators on its respective left side, a voice-channel-status indicator below, and a talkgroup label above.
  • the first receiver 206 and the second receiver 208, as described in the mobile radio 200 of FIG 2 are depicted on the top left and the bottom left, respectively, of each mobile radio 202a-c and 204 a-c.
  • the voice-channel-status indicators i. e. , the voice-channel-status data
  • a given mobile radio denotes a given voice channel as being busy by placing that given voice channel in its respective busy list; the given mobile radio impliedly denotes voice channels that are not in its respective busy list as being currently idle. This is by way of example and not limitation.
  • each mobile radio’s current transmit channel i. e. , the channel to which their respective transmitter 204 is currently tuned
  • current first-receiver channel i. e. , the channel to which the respective mobile radio’s first receiver 206 is currently tuned
  • current second-receiver channel i. e. , the channel to which the respective mobile radio’s second receiver 208 is currently tuned
  • one or more channels if any) in the respective mobile radio’s busy-channel list.
  • the capital letter “C” represents the control channel
  • a one-digit number represents a voice channel (e. g. , “2” represents a voice channel 2)
  • the symbol represents that a given mobile radio in a given scenario does not have a current selection for that particular channel.
  • the symbol represents empty busy-channel lists.
  • all of the channels that are designated in the preconfigured channel list as being voice channels could be occupied with talkgroup sessions; in some such instances, the control channel could be used as a voice channel.
  • a mobile radio could have a “C” in its busy-channel list.
  • the example scenario 300 of FIG. 3 could correspond with an initial condition, i. e. a time at which none of the mobile radios 202a-c and 204a-c are engaged in a talkgroup session.
  • all six mobile radios 202a-c and 204a-c have no currently selected transmit channel, have their first-receiver channel set to the control channel, and have their second-receiver channel set to an idle voice channel.
  • all voice channels are idle in the example scenario 300 that is depicted in FIG. 3.
  • a mobile radio may use any ordered, random, or pseudorandom function for selecting an idle voice channel on which to reside its respective second receiver.
  • the mobile radios 202a and 204c have selected channel “3” as their respective second-receiver channels; the mobile radios 202b and 204b have selected channel “2” ; and the mobile radios 202c and 204a have selected channel “1” . Again, this is purely by way of example.
  • FIG. 4 depicts a second example scenario involving the mobile radios of FIG. 3, in accordance with an embodiment.
  • FIG. 4 depicts an example scenario 400 that is an iteration from the example scenario 300 that is described above in connection with FIG. 3.
  • the mobile radio 202a detects a session-start event (step 106) , which in this case (as determined at step 108) is receipt, via its respective user interface 224, of a session-start command (e. g. , the pressing of a PTT button at a time when the mobile radio 202a is not currently participating in a talkgroup session) .
  • a session-start event e. g. , the pressing of a PTT button at a time when the mobile radio 202a is not currently participating in a talkgroup session
  • the mobile radio 202a responsively selects an idle voice channel (here, channel “1” ) (step 110) , and also transmits, via the control channel, a session-start notification that identifies the talkgroup ( “TG-202” ) and specifies the selected voice channel ( “1” ) (step 112) .
  • the mobile radio 202a also adds channel “1” to its busy-channel list, and further selects channel “1” as its second-receiver channel.
  • FIG. 5 depicts a third example scenario involving the mobile radios of FIG. 3, in accordance with an embodiment.
  • FIG. 5 depicts an example scenario 500 that is an iteration from the example scenarios 300 and 400 that are described above in connection with FIGs. 3 and 4, respectively.
  • the mobile radios 202b and 202c each detect a session-start event (step 106) , which in this case (as determined by each respective mobile radio 202b and 202c at step 108) is receipt, via the control channel, of a session-start notification that identifies their talkgroup ( “TG-202” ) and specifies the selected voice channel ( “1” ) .
  • the mobile radio 202b responsively selects its second receiver channel to channel “1” and the mobile radio 202c maintains its second-receiver channel on channel “1” (step 114) .
  • Each of the mobile radios 202b and 202c also adds channel “1” to its respective busy-channel list.
  • the mobile radios 204a-c each of which is a member of talkgroup 204, each detect a session-start event (step 106) , and each determine (at step 108) that the session-start event is receipt via the control channel of a session-start notification that identifies talkgroup 202 and voice channel “1” .
  • Each of the mobile radios 204a-c responsively carries out a set of session-avoiding functions.
  • each of the mobile radios 204a-c adds channel “1” to its respective busy-channel list, and each also checks whether its respective second-receiver channel is channel “1” . Of the three, this is only true for the mobile radio 204a, which accordingly responsively changes is second-receiver channel to an idle voice channel, which happens to be channel “4” in this example.
  • a mobile radio 200 selects an idle one of the voice channels and carries out a channel-testing process.
  • the mobile radio 202a preselects an idle one of the voice channels, transmits (e. g. , blank frames, dummy data, and/or the like) on the preselected voice channel for a randomly selected amount of time. Thereafter, the mobile radio 202a checks the preselected voice channel for transmissions from any other mobile radio, such as mobile radios 202b-c or 204a-c. If the mobile radio 202a does not detect any other such transmissions on the preselected voice channel, the mobile radio 202a designates the preselected voice channel as being the selected voice channel. If transmissions from other mobile radios are detected on the preselected voice channel, then the mobile radio 202a updates its voice-channel-status data to indicate that the preselected voice channel is busy, and repeats the channel-testing process.
  • the mobile radio 202a periodically conveys its stored voice-channel-status data via the control channel.
  • the mobile radio 202a maintains its voice-channel-status data at least in part by receiving broadcast voice-channel-status data and responsively accordingly updating its maintained voice-channel-status data.
  • the mobile radio 202a scans one or more of the voice channels; if and when the mobile radio 202a detects a session-start event for an ongoing session for the talkgroup 202 on a particular one of the voice channels, then the mobile radio 202a plays out audio received on that channel, and updates its voice-channel-status data to indicate that that voice channel is busy.
  • the mobile radio 202a detects an ongoing session for the talkgroup 202 by detecting (on the particular voice channel) an identifier of the talkgroup 202 or by detecting (on the particular voice channel) an identifier of another mobile radio that is also a member of the talkgroup 202. This may occur as a result of each mobile radio being configured to include an identifier of its respective talkgroup and/or an identifier of itself in one or more of its respective outgoing talkgroup transmissions.
  • the mobile radio 202a maintains a hang timer with respect to talkgroup transmissions on the specified voice channel (i. e. , on the voice channel on which the mobile radio 202a is participating in a talkgroup session as part of the talkgroup 202) .
  • the mobile radio 202a Upon detecting an expiration of the hang timer, the mobile radio 202a responsively updates its voice-channel-status data to indicate that the specified voice channel is idle.
  • the mobile radio 202a also transmits a session-termination message via the control channel.
  • each of the mobile radios 202b-c and 204a-c responsively update its respective voice-channel-status data to indicate that the specified voice channel is idle.
  • FIGs. 6-7 depict a communication system in which mobile radios communicate via one or more radio access networks (RANs) .
  • RANs radio access networks
  • mobile radios that communicate via one or more RANs may also be capable of communicating directly with one another in the manner described above.
  • mobile radios that are capable of engaging in communication directly with one another but not via one or more RANs could certainly carry out and embody the present methods and systems
  • mobile radios that are capable of both direct-mode and RAN-based communication could certainly carry out and embody the present methods and systems as well.
  • FIG. 6 depicts an example communication system, in accordance with an embodiment.
  • FIG. 6 depicts an example communication system 600 that includes one or more commercial RANs 602, a public-safety RAN 604, a data network 606, a circuit network 608, mobile radios 610, and communication links 612-626.
  • An example commercial RAN 602 is discussed below in connection with FIG. 7, though in general, each RAN 602 and the RAN 604 includes typical RAN elements such as base stations, base station controllers, routers, switches, and the like, arranged, connected, and programmed to provide wireless service to user equipment (e. g. , the mobile radios 610) in a manner known to those of skill in the relevant art.
  • user equipment e. g. , the mobile radios 610
  • the public-safety RAN 604 may include one or more packet-switched networks and/or one or more circuit-switched networks, and in general functions to provide one or more public-safety agencies with any necessary computing and communication needs.
  • the public-safety RAN 604 may include a dispatch center communicatively connected with the data network 606 and also with the circuit network 608, for retrieving and transmitting any necessary public-safety-related data and communications.
  • the public-safety RAN 604 may also include any necessary computing, data-storage, and data-presentation resources utilized by public-safety personnel in carrying out their public-safety functions.
  • the public-safety RAN 604 may include one or more network access servers (NASs) , gateways, and the like for bridging communications to one or more other entities and/or networks, such as the commercial RANs 602, the data network 606, and the circuit network 608, as representative examples.
  • NASs network access servers
  • gateways gateways, and the like for bridging communications to one or more other entities and/or networks, such as the commercial RANs 602, the data network 606, and the circuit network 608, as representative examples.
  • the data network 606 may be, include, or be a part of the global network of networks typically referred to as the Internet.
  • the data network 606 may be a packet-switched network, and entities (i. e. , servers, routers, computers, and the like) that communicate over the data network 606 may be identified by a network address such as an Internet Protocol (IP) address.
  • IP Internet Protocol
  • the data network 606 may include one or more NASs, gateways, and the like for bridging communications to one or more other entities and/or networks, such as the commercial RANs 602, the public-safety RAN 604, and the circuit network 608, as representative examples.
  • the circuit network 608 may be, include, or be a part of the circuit-switched telephone network commonly referred to as the public switched telephone network (PSTN) , and in general functions to provide circuit-switched communications to various communication entities as is known in the art. Moreover, the circuit network 608 may include one or more NASs, gateways, and the like for bridging communications to one or more other entities and/or networks, such as the commercial RANs 602, the public-safety RAN 604, and the data network 606, as representative examples.
  • PSTN public switched telephone network
  • the depicted example communication system 600 includes communication links 612-626, any one or more of which could include one or more wireless-communication links and/or one or more wired-communication links.
  • the communication links 612 and 614 are depicted with respective lightning-bolt graphics; while this graphic typically denotes wireless communication, and does in this example as well, this is not to the exclusion of one or more of the other communication links 614-626 being or at least including wireless-communication links as well.
  • the communication link 612 (as mentioned above) connects the commercial RANs 602 and the mobile radios 610
  • the communication link 614 (as mentioned above) connects the public-safety RAN 604 and the mobile radios 610
  • the communication link 616 connects the commercial RANs 602 and the public-safety RAN 604
  • the communication link 618 connects the commercial RANs 602 and the data network 606
  • the communication link 620 connects the commercial RANs 602 and the circuit network 608
  • the communication link 622 connects the public-safety RAN 604 and the data network 606
  • the communication link 624 connects the data network 606 and the circuit network 608,
  • the communication link 626 connects the public-safety RAN 604 and the circuit network 608.
  • the mobile radios 610 may be any suitable computing and communication devices configured to engage in wireless communication with one or both of (i) the commercial RANs 602 over the air interface 612 as is known to those in the relevant art and (ii) the public-safety RAN 604 over the air interface 614 as is known to those in the relevant art. Some example mobile radios 610 and communication links 612 are discussed below in connection with the various figures.
  • FIG. 7 depicts a further example of the communication system of FIG. 6, in accordance with an embodiment.
  • FIG. 7 depicts the communication system 600 of FIG. 6, though in more detail regarding some example mobile radios 610 and an example commercial RAN 602, although a similar figure could be depicted with the sole change being the use of an example public-safety RAN 604 instead of the example commercial RAN 602.
  • FIG. 7 depicts the RAN 602 as including an eNodeB 702, which communicates directly or indirectly with an evolved packet core (EPC) 704 over a communication link 706.
  • EPC evolved packet core
  • the communication link 706 may be or include one or more wireless-communication links and/or one or more wired-communication links, as deemed suitable by those of skill in the relevant art in a given context.
  • the eNodeB 702 includes the hardware and software (and/or firmware) necessary for the eNodeB 702 to function as an eNodeB, a NodeB, a base station, a base transceiver station (BTS) , a WiFi access point, and/or the like, as known to those having skill in the relevant art.
  • the eNodeB 702 in the example RAN 602 may also include functionality typically associated in the art with entities that are often referred to by terms such as base station controllers (BSCs) , radio network controllers (RNCs) , and the like.
  • BSCs base station controllers
  • RNCs radio network controllers
  • any suitable number of eNodeBs could be deployed as deemed suitable by those of skill in the relevant art.
  • the eNodeB 702 is an entity that, on one side (i. e. , the wireless-network side (interface) ) , engages in wireless communication over the air interface 612 with one or more mobile radios 610 according to a protocol such as LTE or the like and, on the other side (i. e. , the “backhaul” side) , engages in communications with the EPC 164 via the communication link 706, to facilitate communications between various mobile radios 610 and networks such as the networks 604, 606, and 608.
  • a protocol such as LTE or the like
  • the other side i. e. , the “backhaul” side
  • the EPC 704 may include one or more network entities such as one or more mobility management entities (MMEs) , one or more serving gateways (SGWs) , one or more packet data network (PDN) gateways (PGWs) , one or more evolved packet data gateways (ePDGs) , one or more home subscriber servers (HSSs) , one or more access network discovery and selection functions (ANDSFs) , and/or one or more other entities deemed suitable for a given implementation by those of skill in the relevant art.
  • MMEs mobility management entities
  • SGWs serving gateways
  • PGWs packet data network gateways
  • ePDGs evolved packet data gateways
  • HSSs home subscriber servers
  • ANDSFs access network discovery and selection functions
  • these entities may be configured and interconnected in a manner known to those of skill in the relevant art to provide wireless service to the mobile radios 610 via the eNodeB 702, and to bridge such wireless service with various transport networks.
  • a commercial RAN and a public-safely RAN may each provide wireless service according to a protocol such as LTE, WiFi, and/or the like.
  • a protocol such as LTE, WiFi, and/or the like.
  • relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
  • the terms “comprises, ” “comprising, ” “has, ” “having, ” “includes, ” “including, ” “contains, ” “containing, ” or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, has, includes, contains a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
  • processors such as microprocessors, digital signal processors, customized processors and field programmable gate arrays (FPGAs) and unique stored program instructions (including both software and firmware) that control the one or more processors to implement, in conjunction with certain non-processor circuits, some, most, or all of the functions of the method and/or apparatus described herein.
  • processors or “processing devices”
  • FPGAs field programmable gate arrays
  • unique stored program instructions including both software and firmware
  • some or all functions could be implemented by a state machine that has no stored program instructions, or in one or more application specific integrated circuits (ASICs) , in which each function or some combinations of certain of the functions are implemented as custom logic.
  • ASICs application specific integrated circuits
  • an embodiment can be implemented as a computer-readable storage medium having computer readable code stored thereon for programming a computer (e. g. , comprising a processor) to perform a method as described and claimed herein.
  • Examples of such computer-readable storage mediums include, but are not limited to, a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a ROM (Read Only Memory) , a PROM (Programmable Read Only Memory) , an EPROM (Erasable Programmable Read Only Memory) , an EEPROM (Electrically Erasable Programmable Read Only Memory) and a Flash memory.

Abstract

La présente invention concerne des procédés et des systèmes permettant de mettre en œuvre un canal de commande auto-géré. Une radio mobile est un membre d'un groupe de conversation. La radio mobile dispose d'un premier et d'un second récepteur, et d'une liste de canaux préconfigurés comprenant un canal de commande et de multiples canaux vocaux. La radio mobile surveille quels canaux vocaux sont occupés, et surveille le canal de commande à l'aide du premier récepteur. La radio mobile détecte un événement de démarrage de session. Si cet événement est une commande de démarrage de session, la radio mobile sélectionne un canal vocal au repos et transmet, par l'intermédiaire du canal de commande, une notification de démarrage de session identifiant le groupe de conversation et spécifiant le canal vocal sélectionné. Si cet événement est une réception, par l'intermédiaire du canal de commande, d'une notification de démarrage de session identifiant le groupe de conversation et spécifiant un canal vocal, la radio mobile détermine si le second récepteur est syntonisé ou pas sur ce canal vocal et, si ce n'est pas le cas, elle syntonise le second récepteur sur ce canal vocal.
PCT/CN2014/088155 2014-10-08 2014-10-08 Procédés et systèmes de mise en œuvre d'un canal de commande auto-géré WO2016054776A1 (fr)

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US15/507,257 US9913110B2 (en) 2014-10-08 2014-10-08 Methods and systems for implementing a self-managed control channel
PCT/CN2014/088155 WO2016054776A1 (fr) 2014-10-08 2014-10-08 Procédés et systèmes de mise en œuvre d'un canal de commande auto-géré

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